If you have your info in an Excel spreadsheet already, I believe you can just use the 'Save As' option from the File Menu (if using Excel 2007 click the Office button and then 'Save As').
In the 'Save As Type' drop down list at the bottom of the dialogue box you can then choose the CSV (Comma Delimited) option.
Then just choose where you want to save it and what you want to call it.
NOTE: Whether you need to do anything other than this for what you need, I am not sure, but I am sure someone else on here will be able to let you know.
Thanks, I didn't see this replyu.
I don't have it in Excel already I'm afraid. I can see where you can create a .txt file, can I do something with that??
Alison